<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <style>
    *{
        padding: 0;
        margin: 0;
        box-sizing: border-box;
        overflow: hidden;
    }
  </style>
</head>
<body>
<canvas id = 'canvas'>

</canvas>
<script src="./rain.js">

</script>
</body>
</html>